/**
* Copyright (c) 2013, Institute of Information Systems (Sven Groppe and contributors of LUPOSDATE), University of Luebeck
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this list of conditions and the following
* disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* - Neither the name of the University of Luebeck nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package lupos.engine.operators.application;
import lupos.datastructures.queryresult.BooleanResult;
import lupos.datastructures.queryresult.QueryResult;
import lupos.rif.datatypes.EqualityResult;
import lupos.rif.datatypes.RuleResult;
public class CollectRIFResult extends CollectResult {
public CollectRIFResult(boolean oneTime) {
super(oneTime);
}
protected RuleResult rr;
protected EqualityResult er;
public void call(final QueryResult res) {
if (res != null) {
if (res instanceof EqualityResult) {
if(oneTime){
if (er == null){
er = (EqualityResult) res;
} else {
er.getEqualityResult().addAll(((EqualityResult) res).getEqualityResult());
}
} else {
if (er == null){
er = new EqualityResult();
}
er.getEqualityResult().addAll(((EqualityResult) res).getEqualityResult());
}
} else if (res instanceof RuleResult) {
if(oneTime){
if (rr == null){
rr = (RuleResult) res;
} else {
rr.getPredicateResults().addAll(((RuleResult) res).getPredicateResults());
}
} else {
if (rr == null){
rr = new RuleResult();
}
rr.getPredicateResults().addAll(((RuleResult) res).getPredicateResults());
}
} else super.call(res);
}
}
public void start(final Type type) {
super.start(type);
er = null;
rr = null;
}
public void stop() {
}
/**
* get result, if there are several types of QueryResults, one of them is
* returned...
*
* @return
*/
public QueryResult getResult() {
QueryResult result = rr;
if (result == null)
result = er;
if (result == null)
return super.getResult();
else return result;
}
public void deleteResult(final QueryResult res) {
if (res instanceof EqualityResult) {
if (er != null)
er.removeAll(res);
} else if (res instanceof RuleResult) {
if (rr != null)
rr.removeAll(res);
} super.deleteResult(res);
}
public void deleteResult() {
if (rr != null)
rr.release();
if (er != null)
er.release();
rr = null;
er = null;
super.deleteResult();
}
public QueryResult[] getQueryResults() {
final int size = (qr == null ? 0 : 1) + (rr == null ? 0 : 1)
+ (er == null ? 0 : 1) + (gr == null ? 0 : 1)
+ (br_list == null ? 0 : br_list.size());
final QueryResult[] result = new QueryResult[size];
int index = 0;
if (qr != null)
result[index++] = qr;
if (rr != null)
result[index++] = rr;
if (gr != null)
result[index++] = gr;
if (er != null)
result[index++] = er;
if (br_list != null) {
for (final BooleanResult br : br_list)
result[index++] = br;
}
return result;
}
}